Dynamic Study of Bird Strike on Rigid Plate
Authors :- Tirth Patel, Atharav Naik, Sankalp Patidar, Gautam Choubey, Sumit Tripathi
Publication :- Recent Trends in Fluid Dynamics Research. Lecture Notes in Mechanical Engineering. Springer, Singapore. (2022): pp 103-112.
The issue of bird strike is very paramount in aviation industries and is also a big concern to the safety of passengers. With rapid increase in the number of flights around the globe, the risk of bird strike is also increasing. Typically, bird strike events are more prone when the aircraft is taking off or landing at an airport. In this work, we present the dynamic analysis of bird strike on a rigid plate using smooth particle hydrodynamic (SPH) method in explicit dynamics and AUTODYN software. For impact analysis, the shape of the bird is modeled as a conical frustum of water while aircraft component is modeled as a flat plate made of titanium alloy with a fixed support at the top face of the plate. The SPH model is used to simulate the bird (conical frustum of water) while a Lagrangian plate model is used to simulate aircraft component. Detailed grid convergence analysis was performed by taking different SPH elements for bird model and different element size of structured grid for the plate model. The results are presented in the form of dynamic values of shock pressure, von Mises stress, and absolute displacement of the plate. It is observed that the shock pressure and von Mises stress are maximum at the point of impact, and the maximum displacement occurring because of impact is on the free side of the plate